1356644111 has 2 divisors, whose sum is σ = 1356644112. Its totient is φ = 1356644110.

The previous prime is 1356644101. The next prime is 1356644141. The reversal of 1356644111 is 1114466531.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1356644111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356644101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678322055 + 678322056.

It is an arithmetic number, because the mean of its divisors is an integer number (678322056).

Almost surely, 2^1356644111 is an apocalyptic number.

1356644111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356644111 is an equidigital number, since it uses as much as digits as its factorization.

1356644111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 1356644111 is about 36832.6500675691. The cubic root of 1356644111 is about 1107.0196028079.

The spelling of 1356644111 in words is "one billion, three hundred fifty-six million, six hundred forty-four thousand, one hundred eleven".